
Harrisville
- County:
- Butler County
- County Seat:
- No
- Area (mi²):
- 0.804
- State:
- Pennsylvania
Harrisville is a borough located in Butler County, Pennsylvania. Harrisville has a 2025 population of 786. Harrisville is currently declining at a rate of -0.88% annually and its population has decreased by -4.15% since the most recent census, which recorded a population of 820 in 2020.
The average household income in Harrisville is $86,138 with a poverty rate of 6.77%. The median age in Harrisville is 50.8 years: 52.1 years for males, and 50.5 years for females.